Table 3.
Content of individual phenolic compounds in Morus alba L. infusions (mg/100 ml).
| Sample | 3-Caffeoylquinic acid (neochlorogenic acid) | Quercetin- 3,7-O-di-hexoside | Chlorogenic acid | Quercetin- 3-O-rutinoside (rutin) | Quercetin- 3-O- glucoside (isoquercitrin) |
Quercetin- 3-O-(6’’-O-malonyl)-glucoside | Kaempferol- 3-O-glucoside (astragalin) |
Kaempferol 3-O-(6’’-O-malonyl)-glucoside |
|---|---|---|---|---|---|---|---|---|
| Commercial products | ||||||||
| M1 | 0.157 ± 0.014f | 0.122 ± 0.020gh | 2.07 ± 0.234d | 0.307 ± 0.052e | 0.292 ± 0.061 h | 0.135 ± 0.025e | 0.162 ± 0.028f. | 0.099 ± 0.014f. |
| M2 | 0.445 ± 0.052b–d | 0.211 ± 0.021cd | 5.13± 0.715cd | 1.02 ± 0.145e | 0.956 ± 0.130e–g | 0.615 ± 0.101c–e | 0.443 ± 0.046c–f | 0.416 ± 0.047c–e |
| M3 | 0.223 ± 0.025ef | 0.123 ± 0.004gh | 3.22 ± 0.430cd | 0.432 ± 0.050e | 0.512 ± 0.078gh | 0.263 ± 0.038de | 0.230 ± 0.036d–f | 0.176 ± 0.020ef |
| M4 | 0.305 ± 0.052b–f | 0.132± 0.021f–h | 3.47 ± 0.589cd | 0.600 ± 0.163e | 0.478 ± 0.123gh | 0.351 ± 0.102de | 0.291 ± 0.038d–f | 0.296 ± 0.054c–f |
| M5 | 0.455 ± 0.042a–c | 0.176 ± 0.005d–f | 5.19 ± 0.312cd | 1.18 ± 0.079ed | 1.09 ± 0.067d–f | 0.701 ± 0.059c–e | 0.509 ± 0.036b–d | 0.485 ± 0.044 cd |
| M6 | 0.246 ± 0.013ef | 0.133 ± 0.012e–h | 3.17 ± 0.314 | 0.484 ± 0.039e | 0.589 ± 0.033f–h | 0.143 ± 0.014e | 0.287 ± 0.012d–f | 0.114 ± 0.006f. |
| M7 | 0.359 ± 0.024b–e | 0.155 ± 0.006e–g | 4.54 ± 0.331cd | 0.651 ± 0.050e | 1.32 ± 0.034c–e | 0.469 ± 0.041c–e | 0.477 ± 0.021b–e | 0.286 ± 0.026c–f |
| M8 | 0.429 ± 0.010b–d | 0.105 ± 0.011h | 3.64 ± 0.145cd | 0.713 ± 0.033e | 0.787 ± 0.074e–h | 0.275 ± 0.007de | 0.364 ± 0.026c–f | 0.211 ± 0.006d–f |
| M9 | 0.433 ± 0.037b–d | 0.129 ± 0.017gh | 3.51 ± 0.281cd | 0.447 ± 0.009e | 0.692 ± 0.029f–h | 0.164 ± 0.010e | 0.447 ± 0.004c–f | 0.180 ± 0.005ef |
| Raw plant material | ||||||||
| L1 | 0.611 ± 0.122a | 0.247 ± 0.021bc | 16.68 ± 5.835b | 5.06 ± 1.032a | 2.89 ± 0.538b | 1.23 ± 0.978bc | 0.632 ± 0.272bc | 0.476 ± 0.294 cd |
| L2 | 0.289 ± 0.073d–f | 0.274 ± 0.019b | 25.0 ± 2.024a | 3.84 ± 0.326b | 1.71 ± 0.208c | 5.40 ± 0.425a | 0.282 ± 0.037d–f | 2.084 ± 0.182a |
| L3 | 0.293 ± 0.059c–f | 0.162 ± 0.016e–g | 13.4 ± 0.445 | 2.19 ± 0.076c | 0.878 ± 0.028e–g | 1.548 ± 0.053b | 0.170 ± 0.020ef | 0.560 ± 0.017c |
| L4 | 0.377 ± 0.028b–e | 0.154 ± 0.007e–g | 3.72 ± 0.288cd | 0.446 ± 0.039e | 0.747 ± 0.081e–h | 0.147 ± 0.018e | 0.352 ± 0.034c–f | 0.116 ± 0.012f. |
| L5 | 0.459 ± 0.092ab | 0.179 ± 0.018de | 4.68 ± 0.639cd | 0.900 ± 0.122e | 1.61 ± 0.226cd | 0.476 ± 0.066c–e | 0.764 ± 0.115b | 0.339 ± 0.050c–f |
| L6 | 0.430 ± 0.034b–d | 0.330 ± 0.016a | 7.14 ± 0.139c | 1.91 ± 0.149c | 3.69 ± 0.311a | 1.01 ± 0.008b–d | 2.20 ± 0.251a | 0.870 ± 0.058b |
Values in the same row marked with different letters differ significantly (p < 0.05). Content of compound 1 is expressed as caffeic acid equivalent, compounds 2 and 6 as quercetin equivalents and compound 8 as kaempferol equivalent.